pro.fessional.mirana.text

Class FormatUtil

java.lang.Object

pro.fessional.mirana.text.FormatUtil

public class FormatUtil
extends Object

安全且内存碎片少的formatter，能够处理 slf4j的`{}`和printf的`%`

Since:

2017-02-11.

Author:

trydofor, Baoyi Chen

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static interface	FormatUtil.V

Constructor Summary

Constructors

Constructor and Description
FormatUtil()

Method Summary

Modifier and Type	Method and Description
static int[]	count(CharSequence src, String... sub)
static int	count(CharSequence src, String sub)
static int[]	count(FormatUtil.V viz, CharSequence src, String... sub) 统计字符窜出现次数
static @NotNull String	format(CharSequence fmt, Object... args) 处理 printf的`%`占位符 安全的，自动补全的 String#format
static @NotNull String	leftFix(@Nullable Object obj, int fix, char pad) 左填充或左截断，保证固定位数
static @NotNull String	logback(CharSequence fmt, Object... args) 处理slf4j的 `{}`占位符
static @NotNull String	rightFix(@Nullable Object obj, int fix, char pad) 右填充或右截断，保证固定位数

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

FormatUtil

public FormatUtil()

Method Detail

logback

@NotNull
public static @NotNull String logback(CharSequence fmt,
                                               Object... args)

处理slf4j的 `{}`占位符

 format(null, new Object[]{"a"}) return ""
 format("{} {} {a}", null) return "{null} {null} {a}"
 format("{} {} {a}", new Object[]{"b"}) return "{b} {null} {a}"
 format("{} {} {a}", new Object[]{"b", "c", "d"}) return "{b} {c} {a}"
 format("abc", new Object[]{"a"}) return "abc"
 format("{{}}", new Object[]{"a"}) return "{a}"
 format("\\{\\}", new Object[]{"a"}) return "{}"
 format("\\{}", new Object[]{"a"}) return "{}"
 format("\\\\", new Object[]{"a"}) return "\"
 format("{c", new Object[]{"a"}) return "{c"
 

Parameters:

fmt - 格式

args - 参数

Returns:

格式化后的字符

format

@NotNull
public static @NotNull String format(CharSequence fmt,
                                              Object... args)

处理 printf的`%`占位符 安全的，自动补全的 String#format

Parameters:

fmt - 格式

args - 参数

Returns:

格式化后的字符

See Also:

Formatter, String.format(String, Object...)

leftFix

@NotNull
public static @NotNull String leftFix(@Nullable
                                               @Nullable Object obj,
                                               int fix,
                                               char pad)

左填充或左截断，保证固定位数

Parameters:

obj - 对象

fix - 固定位数

pad - 填充字符

Returns:

处理后字符串

rightFix

@NotNull
public static @NotNull String rightFix(@Nullable
                                                @Nullable Object obj,
                                                int fix,
                                                char pad)

右填充或右截断，保证固定位数

Parameters:

obj - 对象

fix - 固定位数

pad - 填充字符

Returns:

处理后字符串

count

public static int count(CharSequence src,
                        String sub)

count

public static int[] count(CharSequence src,
                          String... sub)

count

public static int[] count(FormatUtil.V viz,
                          CharSequence src,
                          String... sub)

统计字符窜出现次数

Parameters:

viz - 回调

src - 源

sub - 目标

Returns:

次数数组